<?php

interface Usb{
	public function sendData();
}

interface Lan{
	public function online();
}

class Pc implements Usb,Lan
{
	public function sendData($value='')
	{
		# code...
	}

	public function online($value='')
	{
		# code...
	}
}

$pc = new Pc();

var_dump($pc);